Portion of a footwear upper



FIG. 1 is a perspective view of the portion of a footwear upper embodying the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

FIGS. 1-7 show the remainder of the upper and an outsole in broken lines. The remainder of the upper and the outsole are shown for environmental purposes and do not form any part of the claimed design. 

The ornamental design for portion of a footwear upper, as shown and described. 